Tempest tests uses only supported QoS rule types

If rule type required for QoS tempest test is not supported by current
configuration of Neutron then such test will be skipped.
For example if neutron-server is running with ML2 plugin only with openvswitch
mechanism driver loaded then tests related to MINIMUM_BANDWIDTH rule type will
be skipped because openvswitch mechanism driver don't support this kind of rule.

Change-Id: I88e59cdbd79afb5337052ba3e5aecb96c7c8ea1c
Closes-Bug: 1644097

neutron/tests/tempest/api/base.py

@@ -348,6 +348,11 @@ class BaseNetworkTest(test.BaseTestCase):
             router_id, subnet_id)
         return interface
 
+    @classmethod
+    def get_supported_qos_rule_types(cls):
+        body = cls.client.list_qos_rule_types()
+        return [rule_type['type'] for rule_type in body['rule_types']]
+
     @classmethod
     def create_qos_policy(cls, name, description=None, shared=False,
                           tenant_id=None):
@@ -492,6 +497,18 @@ class BaseAdminNetworkTest(BaseNetworkTest):
         raise exceptions.InvalidConfiguration(message)
 
 
+def require_qos_rule_type(rule_type):
+    def decorator(f):
+        @functools.wraps(f)
+        def wrapper(self, *func_args, **func_kwargs):
+            if rule_type not in self.get_supported_qos_rule_types():
+                raise self.skipException(
+                    "%s rule type is required." % rule_type)
+            return f(self, *func_args, **func_kwargs)
+        return wrapper
+    return decorator
+
+
 def _require_sorting(f):
     @functools.wraps(f)
     def inner(self, *args, **kwargs):

neutron/tests/tempest/api/test_qos.py

@@ -360,6 +360,7 @@ class QosTestJSON(base.BaseAdminNetworkTest):
 
 class QosBandwidthLimitRuleTestJSON(base.BaseAdminNetworkTest):
     @classmethod
+    @base.require_qos_rule_type(qos_consts.RULE_TYPE_BANDWIDTH_LIMIT)
     @test.requires_ext(extension="qos", service="network")
     def resource_setup(cls):
         super(QosBandwidthLimitRuleTestJSON, cls).resource_setup()
@@ -771,6 +772,7 @@ class QosDscpMarkingRuleTestJSON(base.BaseAdminNetworkTest):
     VALID_DSCP_MARK2 = 48
 
     @classmethod
+    @base.require_qos_rule_type(qos_consts.RULE_TYPE_DSCP_MARKING)
     @test.requires_ext(extension="qos", service="network")
     def resource_setup(cls):
         super(QosDscpMarkingRuleTestJSON, cls).resource_setup()
@@ -904,6 +906,7 @@ class QosMinimumBandwidthRuleTestJSON(base.BaseAdminNetworkTest):
     RULES_NAME = RULE_NAME + "s"
 
     @classmethod
+    @base.require_qos_rule_type(qos_consts.RULE_TYPE_MINIMUM_BANDWIDTH)
     @test.requires_ext(extension="qos", service="network")
     def resource_setup(cls):
         super(QosMinimumBandwidthRuleTestJSON, cls).resource_setup()

neutron/tests/tempest/scenario/test_qos.py

@@ -22,6 +22,8 @@ from tempest.lib import exceptions
 from tempest import test
 
 from neutron.common import utils
+from neutron.services.qos import qos_consts
+from neutron.tests.tempest.api import base as base_api
 from neutron.tests.tempest import config
 from neutron.tests.tempest.scenario import base
 from neutron.tests.tempest.scenario import constants
@@ -78,6 +80,7 @@ class QoSTest(base.BaseTempestTestCase):
     FILE_PATH = "/tmp/img"
 
     @classmethod
+    @base_api.require_qos_rule_type(qos_consts.RULE_TYPE_BANDWIDTH_LIMIT)
     @test.requires_ext(extension="qos", service="network")
     def resource_setup(cls):
         super(QoSTest, cls).resource_setup()